Improvement in pulleys



UNITED STATES PATENT OFFICE.

MARCUS BLOOH, HERMAN BLOOH, AND DAVID BLOGH, OF NEW YORK, N. Y.

IMPROVEMENT IN PULLEVS.

Specification forming part of Letters Patent No. l 92,050, dated June 19, 1877 application filed April 9, 1877.

To all whom it may concern.-

Be it known that we, MARCUS BLOGH, HER- MAN BLOOH, and DAVID BLooH, all of the city, county, and State of New York, have jointly invented certain new and useful Improvements in Pulleys, of which the following is a description:

This invention relates to pulleys for suspending lines or ropes upon which clothes are hung to dry. 7

It consists in the new article of manufacture, of a pulley having a wide deeply-grooved wooden wheel and a long straight-edged narrow shackle, provided with a suspending device, and with external strengthening-ribs, whereby a simple and cheap article is afforded,

' wherein, owing to the great space between the wheel and shackle, provision is afl'orded for the passage of any rope; owing to the small extent of contact between the wheel and shackle, little friction will be generated, and

owing to the difference in the material of the said parts, their binding and becoming inoperative through corrosion or warping is obviated, and withal the advantages of the wooden wheel in obviating the soiling of the line, and injury to articles being thereon, by the corrosion, as occurs with a metal wheel, is obviated.

In the accompanying drawing, Figure 1 is a side view of a pulley embodying our invention. Fig. 2 is a front view of the same, showing the wheel'in section and Fig. 3 is a perspective view thereof, showing a knotted rope in it.

Similar letters of reference designate cor responding parts in all the figures.

A designates a wooden wheel, having a very wide and deeply grooved periphery, a, and mounted on a suitable axle. B designates a shackle, consisting of a very narrow straightedged piece of metal, supporting the axle of the wheel A, and extending a long distance beyond the periphery of said wheel, so as to afford ample space for the passage of a rope, howsoever knotty or cumbrous. This shackle is strengthened externally by longitudinal ribs 0, and provided with a suspending device, here represented as an eye, D.

The advantages possessed by this novel pulley are numerous. First, the wide groove .in the wheel and great space betweenit and the shackle and the narrownessof the shackle permit the passage of any rope, howsoever cum brous and knotty; second, the narrowness of the shackle, and consequent smallness of surface contact between the parts, prevents them from generating friction and impairing the operation of the pulley; and, third, the difference in the material of wheel and shackle precludes the pulley from becoming inoperative through corrosion or warping; fourth, it combines the merits of both the wooden and metal pulley, the former inasmuch as the rope, and incidentally the clothes being thereon, will not be soiled through corrosion, the latter inasmuch as it will always work easily.

These advantages of precluding the pulley,

from becoming inoperative are of vast importance. They make the pulleys much safer to use. Such pulleys are used with lines stretched from windows, and anything impairing their action induces the persons using them to lean out, and is apt to occasion their falling out and injuring themselves' We do not claim, broadly, a pulley having a deeply-grooved wide wheel and long shackle; but

What we do claim as our invention, and desire to secure by Letters Patent, is-

A new article of manufacture, consisting of a pulley, A, made of wood, and havinga wide deeply-grooved periphery, and a long narrow shackle, D, made of metal, strengthened externally with longitudinal ribs 0, and provided with a suspending device, substantially as and for the purposes set forth.

MARcUs BLOOH. HERMAN BLOUH. DAVID BLooH.

Witnesses:

JOHN H. BELLAMY, THOMAS J. LYNCH. 

